MXA114

This circuit is a Digital Audio Player which can be activated by the passing of the object
through the sensor. Any voice not more than 680 seconds in duration can be digitally
recorded on to the IC1 via MIC or external signal input. This circuit can be incorporated
with the donation box to give out some gratitude message or music etc., every time the
donation was granted through the sensor.
TECHNICAL DATA- Power supply : 12VDC.- At standby stage the circuit consumes about 30mA and at working stage about 190mA.
at speaker 8-ohm 0.25W.- Time record : max. 680 seconds.- Select record signal from MIC or the external signal.- Build-in on-board audio power amplifier 8 watts.- PCB dimensions of RX sensor unit : 1.41 in x 2.00 in.- PCB dimensions of TX sensor unit : 0.44 in x 2.00 in.- PCB dimensions of voice recorder unit : 2.00 in x 4.29 in.
CONNECTING POINTS FOR APPLICATION
Voice recorder circuit setup- +12V point is for connecting to a 12-VDC power supply.- SP and SP1 points are for connecting to speaker 8-ohm 0.25-50W.- VOLUME is the volume control for the build-in power amplifier.- OUT point is for connection to the external power amplifier.- VOL OUT is the volume control at OUT point for the external power amplifier.- Slide switch REC, PLAY is for operating mode selection.- Point JIN must left opened.- Point JSW1, JS0 and JS1 must be closed by jumper in someway.